Rivet-setting machine



March 1o, 1925. u' 1,528,896

. E. B. STMPSON RIVET SETTING MACHINIE- Filed July e, 1921 2Sheets-Sheet 1 E. B. STIMPSON l RIVET SETTING MACHINE March 10, 1925.

Filed July, 1921 2 Sheets-Sheet 2 Swum/ltoz Patented Mar. 10, 1925.

EDWIN B. STIMPSON,

OF BROOKLYN, NEW YORK, ASSIGNOR TO EDWIN B. STIMPSON COMPANY, OFBROOKLYN, NEW YORK.

Rivier-SETTING MACHINE.

Application led July 8, 1921. Serial No. 483,354.

To all whom t may concern:

Be it known that I, EDWIN B. STIMrsoN, a

citizen of the United States, residing at Brooklyn, in the county ofKings andState of New York,A have invented certain new and usefulImprovements in Rivet-Setting Machines, of which the following is aspeciiication.

This invention relates to machines for.

setting rivets or the like in leather or other sheet material, suchmachines including', `as usual, a hopper, and a raceway down whichrivets are fed to a cut-oil' and transfer slide which delivers them oneby one to apocket or holder, whence the individual rivet is driventhrough a sheet of leather or other material. In such machines the lowerend of the raceway has generally been made by axing strips of steel tothe outer face of a stationary part fast to or integral with the machinehead, with a unitary nose-piece fast to the face of the stationary part,having a rivet-guiding groove non-alined with the main raceway, thenose-piece having another groove extending horizontally and.intersecting the rivet-guiding groove, and aslide in the horizontalgroove adapted to bemoved into alinement with and to receive a singlerivet from the raceway proper, and then to be moved into alinement withand transfer the rivet to the rivet-guiding groove of the nose, whencethe rivet drops vinto the carrier, immediately below a driver orplunger.

The slide referred to is reciprocated by means of a connection with somesuitabley moving part of the machine, in properly timed relation to theplunger which sets the rivets, and its well understood function is toreceive and deliver 'one rivet at a time from the main raceway to thenon-alined discharge raceway Vwhence it goes to. the pocket for theactual setting operation, Ythe main raceway being iny the meantimeblocked oil. Inasmuch as this slide is wsometimes jammed by reason ofrivets 4assuming 'wrong positions, or because ya rivet may be defec tiveor distorted, it is desirable that there should be, somewhere in, theoperative connection between the slide and the moving part of themachinerthrough which it is reciprocated, a yielding element, one whichis sufficiently rigid for normal operation, and which lwill ,yield andprevent breakage in eas'eethe,slideisjammed: f n; l

It is an object of my invention to provide such a yielding connection inthe form of a spring of special construction and having a particularrelation to the parts which are connected by it, and which will securethe object above mentioned.

Other objects and aims of the invention, more or less broad than thosestated above, together with the advantages inherent, will be in partobvious and in part specifically referred to in the course of thefollowing description of the elements, combinations, arrangements ofparts, and applications of principles constituting the invention; andthe scope of protection contemplated will appear from the claims.

In the accompanying drawings, which are to be taken as part of thisspecification, and in which I have shown merely a preferred form ofembodiment of invention:

Figure 1 is an elevation of a rivet setting machine embodying myinvention;

Y Figure 2 is a detail of the slide operating parts, as in the Figure lrelation;

Figure 3 is avview similar to Figure 2, showing what happens to thespring element when the operating lever moves and the slide is jammed;and

Figures 4 and 5 are top plan vews'of two slightly different forms ofspring connec-A tion.

Referring toA the numerals on the draw` ings, the hopper of a rivetsetting machine appears at 6, and includes a rotating magazine 7,operated by means of a pawlk 8, ratchet 9, pivoted link 10 and lever 11.Lever l1 also operates plunger l2, and link 10 is operatively connectedwith a pivoted lever 14. vA main raceway from the magazine is indicatedat 15, a discharge'raceway section 16 alined with the main raceway, anda transfer and cut-off slide 17 which rei ciprocates between the tworaceway. sections. Reciprocation of the slide 17in accordance with theoscillations of lever 14 takes place by reason of the spring connec--tion 18 interposed between the slide andthe lever. 4In making thisspring connection I may take va length of suitably still wire or rod,and bend it upon itself, preferably so that it has a number of. parallelcourses 19 arid terminal portions 20, the latter being secured to lever14 and slide i7.v The spring asawhcle may be' in' substantially a singleplane (Figure 4), or, after being formed as in Figure 4, the courses 19thereofmay be curved vas in Figure 5.' In the latter' case I am able toprovide a spring of the same maximum vertical and horizont-al straightline dimensions, with substantially the same normal ridigity as theFigure l form, but with greater elasticA capacity because the actuallength of the wire in the springfrom end to end will be greaterin theFigure 5 construction even with identical maximum vertical andhorizontal dimensions. The curvature of the plane of the spring enablesitto approachv closer to the machine without contacting therewith andwithout diminution of elastic capacity.

Preferably the spring` is'so connected that its plane is the plane ofmovement of slide 17 or lever 14,01' both in case' the latter two partsmove in the same'plane. VIf the slide and leverdo not move in thesameplane, the

plane of the spring will correspond to the plane of lmovement of oneofthem, say the slide, and the'upper'part of the spring bent away to meetthe lever 14. The same remarlsapply to the Figure 5 form, the plane ofthe spring in that case being the plane which includes thechords ofthe-transversely curved--courses 19.'

The spring thus described' has ample rigidity under normal conditions,and withal is suilicientlyyielding so that it maybe readily assembled inposition, and so that-in case of a. jam `the force lof lever llt willbetaken up in a distortion of the spring (Figure withoutinju'ry tov theSlide 17 or other parts.

Inasmuch as many changes could be made in the above construction, andman-y apparently widelyT different embodimentsv of my invention could bemade without departing -from the scope thereof, it is intended that allmatter lcontained in the above description or shown in the accompanyingdrawings `shall beciuterpreted as illustrated and not in. a limitingsense.A

It is also to be understood that the language used in the followingclaims is intended to cover all the generic-and specific features of theinvention herein described and all statements of the invention which, asamatter of language, might be said to fall therebetween.

I claim:

1. In adeviceof `the Vkind describe-d',l a reciprocatingslidc and amember Vfor moving the same, and 1a resilient connection between saidtwoparts.comprisingia spring made of a single` length -of wirelor rod bentupon it'- self to form courses and vterminal portions` allinsubstantially the same plane', said terminalportions.beinglconnectedto 'the'l slide' and Ato. .the moving-'element respectively', with' theplane Aof the: spring'extending substan tially in the linefof movementof the slide iaasee and said courses being substantially equal inlengthto the distance between said slide and said moving element.

2. In a device of the class described, a

reciprocating slide member, a-power-transmitting spring connected to oneend of the slide member, said power-transmitting spring extendinglaterally with relation to the path of movement of the slide member andincludingundulations extending in substantially parallel relation to thepath of movement of the slide, and a driving member connected to theother end of the powertransmitting spring to operate the spring toreciprocate the slide, said undulations in said spring beingsubstantially equal in length to the distance between saidslide memberand said driving member.

3. In a device of the class described, an elongated reciprocating slidemember having an opening therein adjacent one end thereof, apower-transmitting spring having oppositely extending terminal portions,one of said terminal portions substantially fitting said opening andadaptedto be 'readily inserted therein or remoyedtherefr'om, saidpower-transmitting spring extending laterally with relation to the pathof movement of the slide member and including Aundulations extending insubstantially parallel relation to the path of movement of theslidemember, said undnlations being'distributed along the axis connecting theterminal por` tions of saidspring, and a rock arm having movementsubstantially parallelv to the path of movement of the slide andhavingan opening to receive the 'other terminal of the spring.

4. In a device of the class described, va slide member, a.power-transmitting spring operatively connected with said slide member.'and a driving member connected to the spring-and spaced laterally with'relation to the path of movement of the slide meniber, saidpower-transmitting spring being formed in undulations vextendingtransverselyto a line joining the points of connection of the springwith the slide member and the driving member, and saidundulations beingsubstantially equal in length to the distance between saidmemb'ers andlying substantially in the 'plane of movement ofthe spring-andthe slide.

5. 'In a device ofthe class described," a movable -drivi-ng member, apower-transmitting spring having nndulations extending- Itransversely tothe length ofthe spring and the lengthl of the individual undulationsbeing equal to atleast one half the length olf-the spring anda drivenmember operated by said power-transmitting spring. i G;power-transmitting member comprising' a spring having'transverseundulations equal in lengthto' at least 4onehalf the length of: the'spring, and the springas a' whclebed leef ing transversely curved, adriving member` connected to one end of said spring and operating tomove the spring in the directions in which the undulations extend, and adriven member connected to the other end of the power-transmittingspring.

7. In a rivet-feeding machine, a reciprocating slide and aJ member formoving the same, and a resilient connection between said tWo partscomprising a spring made of a single length of resilient material bentupon itself to form courses and terminal portions, all in Substantiallythe same plane, said terminal portions being connected to the slide andto the moving element respectively, the plane of said spring beingcurved to permit said spring to approach close to said machine, theplane of said spring extending substantially in the line of movement ofsaid slide.

In testimony whereof I aflx my signature.

EDWIN B. STIMPsoN,

